I feel for all of you guys. In the same boat, granted I know how to do all of the theme edits on IPS themes. The main problem is that IPS v4.4.10 -to- v4.5.3, the theme edits required are massive for both the... HTML and CSS files. What I am seeing with all of the IBTheme themes, IPS v4.5.3 breaks the themes badly. I have started to upgrade the... Revolution Yellow theme myself, but found that whoever did the past IPS versions of the theme edits DID NOT do them correctly. So going to make it very very difficult to get the themes upgraded properly.
All you can do is wait and see what trans